I have a frameset with to frames left/right. The content of the frame left the one below. As you can see, I want to update the hash/fragment identifier of the left frame's parent (the uppermost window) location.

However, this leads to reloading the whole frameset in Safari/Chrome. In Firefox, the whole frameset is not reloaded, but the browsers displays "loading" continuously.

Background: The left frame shows a navigation. A click in an entry loads another HTML page in the right frame and should also update the hash in the location of the browser window so the user can bookmark pages.